I'm VERY happy with the mod, but it does have a down side as well. SACD gets you closer to the master tape, and the new output stage turns the Sony into a high-resolution player. On well recorded stuff (DMP, Delos, Telarc, Audioquest, new Sony dsd releases), it can sound frighteningly good (I get the same sort of let-down, which is less these days than it used to be, switching from SACDs to normal CDs that I get switching from vinyl to CD), but on less than stellar reissues you'll hear everything bad about the master tape as well as the good, such as overly hot mixes. Ah, the price of a glimpse of (digital) heaven... I hope that more new releases based off DSD, or even well-recorded analog, 20 or 24-bit digital, masters come out, because they really show SACD's strengths.